Revolving car seat



Juri@ 24, 1941. VAN A.3m/EER 2,247,264

REvoLvING CAR sEA'T Filed Feb. 2l, 1938 8 Sheets-Sheet 1 -Zfez Z372.' diamante 7% arzer eer;-

BIAQN 4 C. A. VAN DERVEER June 24, 1941..

REVOLVING CAR SEAT 8 Sheds-Sheet 2 Filed Feb; 21, 15-8 `une 24, 194.1.

c. A. VAN DERVEER REVOLVING CAR SEAT 8 sheets-sheet 5 Filed Feb. 21, V193:3

June24, 1941.

C. A. VAN DERVEER REvoLvING CAR SEAT Fi 1ed Feb.`21, 1958 8 Sheets-Sheet 4 mwN.

June 24, 1941.

C. A. VAN DERVEVER REVOLVING CAR SEAT I 8 Sheets-Sheet 5 Filed Feb. 2l, 1938 June 24, 1941. c. A. VAN DERVEER REVOLVING CAR `SEAT Filed Feb. 21, 1938 8 Sheets-Sheet 6 June 24, 194lc. A. VAN DERVEER REvoLvING CAR SEATy l Filed Feb. 21, 1938 8 Sheets-Sheet 7 June 24, 1941.

4 c. A. VAN DERvl-:ER

REVOLVING CAR SEAT Filed Feb. 21, 1938 8 Sheets-SheetA 8 Patented `une 24, 194i nutren STAT-Es APer E @FLEECE ClarenceAwan Derveer,.hicago, Ill., assigner to- S. Karpen & Bros., Chicago-,.lll. a. corporation of Illinois.

ApplcationlFebruaryfZl, 1988,V SerialNo. 191,7-74

Clams.. (-.QL155-96) This invention, relatesY particularly to a seat adapted for use in railroad' coaches and buses, although the invention may be usefully employed in other situations.

An object off the invention is: to` providek anv improved seat which maybe reversed inx directionA and which may be laterally shifted so as to allow suicient` clearance for turning when the seat isrnountedY adjacent the. side of a coach or bus; Another object is to' provide a seat which may be shifted directly to one side. before being reversed and whiehmay be shifted direct-ly back to normal' position afterv beingr reversed.

Anotherl object is to provide improved means for guiding the shifting. andw turning movement.. of the seat.4 Yetanother'object is to providenove1 means for locking the seat when in normal position.r

A further object is'to` provide a seat of strong and sturdyY constructionwhich can be operated' with greater convenience.

The invention is illustrated in its preferred' em. bodiment in the accompanying, drawings, in which:

Fig. 1 is a plan view'of. the improvedstructure, the parts being shown in position. to support a chair in. its normal lateralV position adjacent the side of a car and facing forwardly; Fig. 2, a view similar to Fig. 1` but. showing the chair supporting structure shifted laterally to one side in preparation for turning; Fig. ,3, .a view similar to Figs. 1 and` 2, but showing the seat. supporting structure turned through 90; Fig, 4, aview similar to Figs. 1-3, but showing the seat supporting structure in its normal lateral position after havingbeen turned' through substantially 180; Fig. 5, a sectional view in elevation, the section being taken as indicated at' line 5 5' of Fig. 1; Fig. 6 a sectional. view in elevation taken as indicated as line 6-6 of Fig. .1;Y Fig. 7,. a plan sectional lView taken as indicated at line T-'l of Fig. 5;

Fig; 8; an illustrative plan View showing. the seat. in its normal lateral position adjacent the side of a car; Fig. 9, a. view similar to Fig. 8, but showing the seat'as it is being turned in reversal; Fig. 10; a view similar to Figs. 8' and 9' but showingv thefseat inw its-normal lateral position after being. reversed; Fig. 11, a plan view of a modified. form of construction embodying my invention; Fig. 12, a broken plan view of. another modified form of construction; Fig. 13, a broken plan view` of the construction shown in Fig. 4, the parts being shown. in. a different position; and Fig. 14, a. broken vertical sectional view,1the. section being taken' as indicated'at line Il of Fig; 13';

In the illustration given, A designates a" base; B, av guide block pivotally mounted onbase A;

C; a carriage` in slidable engagement with block" B.

The base casting II] has the side walls I64 which` may be of any desired form or curvature andv which may be equipped at their bottoms with the' inturned flange I'I` adapted to rest on the. pe-

ripheral edge portion of the bottom plate II'.

40 ner grooves 26 having beveled ends.

Straps I8- extending between walls |16 have bolts I9 extendingdownwardlythrough them and engaging the tapped'holes within bosses I5` to secure the casting I0 tightly to base plate I'I.

The top wall 26 of base A is provided with openings 2`Il through which access may be had forv inserting bolts I9 land is provided withy the relatively large opening 22 forreceiving a portion of the guide block B. A second wall 23, spaced-be'- lowv wall 20, has its edges joined with sidewall I6' and is provided with the openingV 24 which registers with the opening 22 in wall 201 Wall 2li` has its top surface provided with theV ca'm track 25 having a' semicircular portion 25a which is concentric with the opening 22'; The'end.

portions 25b and 25C of the cam track' 25" extend laterally from the diametrically opposite ends of the curved portion 25a. Adjacent the junctions of end portions-25b and 2:5c with the curved portion 25a the wall 20 is provided With the cor- 1n these grooves are placed the bumperv piecesV 27 which may be of hardened steel or other suitable ma*- terial.

On the side of base A whichV is to be placed adjacent the side of the coach is a lug structurev 2B which extends slightly above top wall 20 andl preferably has its nose portion 28EL rounded.

At the extreme ends of slot 25' are slight recesses 29a and 29b which cooperate with aplung.-

er for releasably locking the carriage C as willappear more clearly later in this description.

The guide block B comprises a plate 30 which is supported on the flat top surface of the top base wall 20. Integral: with plate 30 or'xedly secured to this plate is' a downwardly extending cylindrical portion 3l which is received within openings 22 and 24 of walls 20 and 23, respectively. Portion 3| is provided at its lower end with the inwardly extending annular ange 32; and a retaining flange 33, engaging the 'underside of wall 23, is secured to portion 3| b-y bolts 34 extending into flange 32.

Thus mounted, the guide block B is supported on wall 20 of base A, and is rotatable about the center of opening 22. Extending upwardly from plate 30 of block B are the flanges 35 which form the edge grooves 3G adapted to slidably receive the front and back edges of the chair carriage C.

Carriage C comprises a pair of spaced rails 31 and 38 which may be secured in any suitable manner to the underside of a chair frame. The front supporting arms 39 are lattached at their ends with rail 3l in any suitable manner, and the rearwardly extending supporting arms 40 are attached at their ends to the rail 38. A lower wall 4| of carriage C rests upon plate 35 of block Band has its edges 4|a slidably received in grooves 36. a shell structure 42 which provides the socket 43 opening toward the end of the carrier and adapted to receive the lug 28 therein, and at its other end is a similar structure 42aL providing the socket 43a also adapted to engage lug 28.

Plate 3D of the block B is cut away to provide the openings 44 and 45, and through opening 44 extends a stud 50 carried by the carriage C and engaging the cam track 25. Stud 50 may comprise a sleeve or roller 50a which has its lower end extending into track 25 and which has its upper end contained in a housing |.'|b which is attached to the wall 4| of the carriage. Within sleeve 50a is a spring pressed plunger 55C which is Aurged against the bottom of the cam track and which, when the carriage is in normal lateral position, engages the recess 2&1a in the bottom of track portion 25h.

When the improved seat is mounted in a coach or bus, the chair structure supported on` carriage C will normally be adjacent the side of the coach and the carriage will be in the position shown in Fig. 1,`with plunger 50c r-esiliently engaging the recess 29a, and with socket 43 engaged by lug 28. It will be seen that the carriage cannot be rotated while in Vthis normal lateral position, for the engagement of lug 28 with socket 43 rigidly locks the carriage against turning movement. Also the semi-circular notch 5| in the edge of opening 4d engages the sleeve 55a, further locking lthe carriage against angular movement. i

When it is desired to turn the seat so as to cause the chair to face a rearward direction, the chair and carriage C may be pulled laterally directly away from the side of the coach. Upon such lateral movement of the carriage, the spring pressed plunger 50C moves upward and out of recess 29.a and the stud 5B moves along the straight end portion 251D of the track 25. Upon reaching the end of portion 25h the sleeve 55a strikes the bumper piece 2l and the carriage is prevented from further lateral movement. Figure 2 illustrates the position of the parts at this point in the operation. Socket 43 of the carriage is now moved free of lug 28, and the carriage and block are free to rotate.

After the chair and carriage C have been moved to this side position, the chair will be removedfrom the side of the coach and upon being rotated will clear the side of the coach.

At its one end carriage C hasl It will be remembered that the block is pivotally secured to the base, and lateral movement of the carriage is permitted by reason of the sliding engagement of the carriage with grooves 36 of the block. As the chair is moved laterally away from the side of the coach, carriage C slides along one axis of block B and this block does not move, but when the side position is reached and stud 50 reaches the curved portion 25a of the cam track, the carriage and the block both rotate about an axis at the center of the opening 22.

Where, as in the present embodiment, the curved portion 25a of the track is arcuate in form and concentric with opening 22, there is no relative movement between the carriage and block while the 'seat is being rotated. However, it is within the scope of this invention to have the curved portion 25a of other' than arcuate form or arcuate about some other center, and in such cases there would be relative movement between the carriage and block as this seat is rotated. This track may be curved to produce any desired lateral movement of the carriage. When the curvature of the track guides the stud 50 'away from the center of the opening 22, the carriage will be moved laterally to one side, and when the curvature of the track guides the stud 5I] toward the center of opening 22 the carriage will bemoved back toward normal lateral position. v

When, in` the present embodiment, the seat has been turned through a half revolution or substantially stud 50 will have traveled along the cam track to the straight end portion 25 and will impinge the bumper 21 at this junction. Then no further rotation is possible, and the seat may be moved back laterally toward the side of the coach, the stud 50 moving in the end portion 25c of the cam track and finally moving to the end of this track portion where the plunger 50c enters the recess 29b in the bottom of the cam track. As the seat is pushed back to its normal lateral position, the socket 43a is pushed over and in engagement with the lug 28 to effectively anchor the seat against angular movement while in this reversed position.

The above operation takes place when the seat is being changed from a position adjacent the side of a coach and facing in one direction to a position adjacent the sid-e of a coach and facing in a reverse' direction. When it is desired to change the seat again back to its original position, the chairjand carriage may again be pulled laterally to the side position, turned in a reverse direction to 180, and then pushed back to itsnormal lateral position.

With the base attached to the floor of a car or bus as herein described, the seat may be conveniently removed for cleaning by merely inserting a tool through holes 2| yand loosening bolts I9. The'screws I4 which extend into the floor need not be disturbed, and the bottom plate li can always be left securely in place.

In the modification shown in Fig. 11, the construction is substantially the same as shown in Fig. 1, save that the cam groove 25h is not substantially circular, as groove 25a, but is irregularly'curved, thus producing an irregular movement of the seat as it is rotated. By this means a more effective turning of the seat can be accomplished in less Space.

In the modication shown in Figs. 12, 13 and 14, the base casting member Illa is provided with a tubular member 6D through which is extended a pin 6I. The pin El extends through a socket formed within the member 62 of the shiftable carriage member 63. By this means, a denite locking support is accomplished which prevents any rocking whatever by the member 63, the steel pin 6I being suicient to support the member 62. The pin 6l, which engages the member 63 of the carriage, serves the same function heretofore described in connection with the main carriage and the locking end pieces carried by the base. In other words, in the movement of the carriage and the block, wherein the block has an angular movement of approximately 180, there has been shown a lug and socket means for locking the carriage into position. Likewise, when swung through another movement of 180, the carriage is locked by the lug and socket arrangement in the other position, The structure shown in Figs. 12 and 13 corresponds with the lug and socket structure already described but shows a considerably improved structure in which simple meansnot only serve as locking means but as supporting and stiiening means, the steel pin 6| serving to support the member 62.

Obviously, the structure may be changed in many respects without departing from the spirit of my invention. The foregoing detailed description has been given for clearness of understanding only and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in View of the prior art.

What I claim as new and desire to` secure by Letters Patent, is:

1. In combination, a base equipped with a semicircular cam track, a block carried by said base and rotatable thereon about a xed axis, a chair carriage slidably mounted upon said block and movable laterally of said axis, and a cam stud carried by said carriage and adapted to engage said cam track.

2. In combination, a base equipped with a cam track, a guide block pivotally mounted on said base, a carriage slidably engaging said block, cam

means carried by said carriage and engaging said cam track for controlling the relative movement of said carriage and block upon movement of said block about its pivot, and means including a lug and socket for locking said carriage in positions substantially 180 apart.

3. In combination, a base, a guide block pivotally mounted on said base, a carriage slidably carried by said block, and means for controlling the relative movement of said carriage and block according to the angular position of said block relative to its pivot, said means including a track carried by said base having a curved portion and laterally extended end portions and a stud iixed to said carriage and adapted to engage said cam track, said means being adapted by reason of the shape of said track to guide said carriage laterally of said base when said stud engages either of the end portions of said track 'and being forced thereby to guide said carriage in angular movement while said stud engages the curved portion of said track.

4. In combination, a bas-e equipped with a cam track having an opening extending downwardly of its top, a guide block carried by said base and having a downwardly extending cylindrical portion rotatably held within said opening, and a chair carriage slidably engaging said block and carrying a cam stud adapted to engage said cam track.

5. In combination, a base equipped with a top wall having an opening therethrough and equipped with a cam track, said base also having a second wall having an opening therethrough aligned with said first mentioned opening, a guide block rotatably carried on said top wall of the base and having a cylindrical portion extending downwardly through said openings, a flange piece attached to said cylindrical portion and engaging the underside of said second wall, and a chair carriage slidably engaging said block and carrying a cam stud adapted to engage said cam track.

CLARENCE A. VAN DERVEER. 

